Here is the list of the most popular white wine grape varieties in Germany, counted in volume:
– Muller thurgau, 14%
– Riesling, 13%
– Gruner veltliner, 7%
– Chardonnay, 5%
– Pinot gris (rulander), 4%
– Silvaner, 4%
– Other, 53%
White wine still dominates production but merlot is actually the second most used variety, after M-T. Quite a surprise, as is the quantity of chardonnay. Source: Drinks International.
UPDATE: This listing looks a bit suspicious so we’ve done an update based on numbers from the German Wine institute here.